The American Airlines AAdvantage® MileUp® Card and the Citi® / AAdvantage® Platinum Select® World Elite Mastercard® are both excellent choices for earning AAdvantage miles. The AA Platinum Select is the better option for frequent travelers due to its superior airline perks, including free checked bags and priority boarding. It offers 3X miles on American Airlines purchases and valuable travel benefits.
However, the AA MileUp card is a strong contender for those seeking no annual fee and rewards on groceries. Its 2X miles on groceries and American Airlines purchases make it appealing for everyday spenders.